Marker-lamp.



h A. G. KARL.

MARKER LAMP APPLICATION FILED Ape. 5, 1912.

Patented Nov. 25, 1913.

fllizi'ffirz;

- inventor Attorneys rmfiersn STATES" s ren mom.

ALBERTG. KARL, or BALTIMORE, MARYLAND,

MARKER-LAMP.

' of this character having means whereby difi'erent colored lights can be shown either.

separately ortogether or in combination with a white light, colored shutters of novel form'being utilized for this purpose and there l'ieingsiinple' and efiicient means employed whereby these shutters can be quickly adjusted and securely held so that the proper co'mbii'lation' of lights can be obtainer.

With the foregoing and other objects in view which'will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, itbeing understood thatchanges in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, Without departing from the spirit of the invention.

In the accompanying drawings the preferred. form of the invention has been shown.

in said drawings :--l igure l. is an elevation of the lamp. Fig. 2 is a vertical section lheretln'mlgh. Fig. 3 is a section on line A--'ll Fig. 2. Fig. l is a detail View of the lamp door.

Referring to the figures by characters of reference 1 designates a, cylindrical lantern body the lower end portion of which is of any suitable (amstrlutimi to receive the oil font 2. The lantern body is provided, as ordinarily, with two lenses 3 and 4% respectively disposed at right angles to each other.

Secured to the inner surlaee of the wall of the body '1 is an inner annular supporting edge 5 having an upstanding flange 6, and an upper guide ledge '7 having a. depending flange 8. The channels formed between the wall of the body 1 and the flanges 6 and 8 are adapted to receive the lower and upper edges respectively of a semi-circular shull" r 9 formed of glass or any other suitable transparent material preferably colored red. A slot 10' is formed in the body 1 and close to the upper face of the ledge 5 and is e.\'- tended through approximately 270 degrees, the center of the slot being located directly Specification of Letters Patent.

' lined by the flanges 6 and -8.

Patented Nov. 25-, 1913.

Application'filed August 5,1912. Serial No. 713,370.

under the center of the lens 4. Projecting stud '11' through this slot 10 is a threaded which is fixedly secured to the lower edge portion of the shutter 9. A milled nut 12 or the like engages the'stud 11 and constitutes a handle whereby the shuttercan be shifted within the "channels back of the flanges 6 and 8 so as thus to move into position back of either or both of the lenses 3 and 4 or to points remote from the lenses.

Extending inwardly from the wall of the lamp body 1 and below the ledge 5 is another ledge 13 having an nn standing flange ii at its inner edge, this flange 14: outlining a circle of'less diameter thanthe circle out- Another ledge 15 extends inwardly from the upper portion of the body land has a depending flange 17 at its inner edge and in alinement with. the flange 14.. A semi-circular shutter 18 of glass or other transparent material is mounted at its lower and upper ed es in the channels formed between the I. anges le and 17 and the Wall of the lamp body 1, this shutter also extending through the openings inclosed by the flanges 6 and 8, as will be apparent by referring particularly to Fig. 3. A slot 19 is formed in the body of the lamp below the slot 10 and extends through approximately 270 dethe center of this slot 19 being located directly opposite the center of the slot 10. A threaded stud 20 is fixedly connected to the lower portion of the shutter 18 and extends through the slot 19, the projecting end of the stud being engaged by a. milled nut 21 or the like which constitutes a handle.

The shutter 18 is preferably colored so as to' produce a green light. The shutters are so proportioned that, by shifting them both to one position within the body 1, a ,white light will he directed through both oi the lenses and 4. This normal position of each shutter has been indicated in Fig. 3. Should it be desired 'to show a redlight through lens 3 and a. white light through lens 4, shutter 9 is shifted within .its ehanT nels in the direction indicated by arrow a until it reaches the point indicated at b. The not 12 can then be tightened so as to clamp the shutter against the body 1 of the lamp whereupon movement of the shutter out of position is prevented. By reversing the movement-of the shutter 9 as indicated by the arrow '0 until the shutter is brought to the point indicated by I), a red light will loo appear Within the lens 4 and a white light within the lens 3. Shutter 18 can be similarly shifted so as to cause a green light to appear in either lens 3 or lens 4 and, by shifting sl'iutter 9 in the direction indicated by arrow a until it reaches the point -b and by shifting shutter 18 in the direction of the arrow 0 until it. reaches the point I), a red light will appear within lens and a green light Within lens 4. By reversing this movement of the two shutters, a red light will appear in lens 4 and a green light within lens 3. Thus it, will be seen that by means of the structure herein .lescribed no less than nine, arrangei'i'ient of lights may be produced as follows :two reds, two greens, one red and green, one green and red, two whites, one white and red, one red and white, one white and green, and one green and white.

The particular means employed for shifting the shutters is znlvantageous in that the shutters'can not only be. readily moved 'thereby,but they can be securely held in any positions to which they may be shifted.

As the shutters move in concentric circles the mechanism necessary to actuate tnemis greatly simplified and a very compact structure is produced. I

The body of the'lamp may be provided with a sliding closure 22 whereby access may be had conveniently to the burner.

The lamp body 1 can be provided with a suitable extension, such as shown at 23 whereby it can be supported from a suit-- able bracket, it being understood that this extension can be placed wherever desired and can be oi any desired construction. l urthermore, a bail-like handle 23 can be connected to the upperportion of the body for use in carrying the lamp.

Vhat ,is claimed is A marker lamp including a lamp body having spaced lenses disposed at right angles to each other, semicircular transparentshutters of different colors mounted to move independently of each other in concentric circles within the body, each shutter being shiftablc to active position back of either or both of said lenses or to inactive position within the body.

In testimony that I claim the foregoing as my own, I have hereto allixed my signature in the presence of two witnesses.

ALBERT (i. KARL.

Witnesses Geo. \VM. Seuwi-n'rzi-zn, Ileana \VINnLeR.

lit) 

